FakeNES is a highly portable, Open Source NES and Famicom emulator. It runs on all modern operating systems and has an actively maintained DOS port for enthusiasts. Support for phones and other mobile platforms is under development.
The majority of the project is entirely original code released under the zlib/libpng license. Contributed and third-party code is included under GNU licenses.

A skeletal animation library designed to load and play skeletal animations. It supports models that are composed of several swappable meshes bound to a single skeleton that can be driven by multiple animations and has an export plug-in for Maya.

SpriteWorld (spriteworld.org) is a game SDK for Macintosh written in C. The goal of this project (SpriteWorld X) is to create a cross-platform version of SpriteWorld which sits on top of SDL (libsdl.org) and OpenGL (opengl.org) / OpenAL (openal.org).

Virtual Reality Chat (VRC) is developed using a framework (Yaf3D) which combines robust software libraries such as OpenScenegraph, Lua, ReplicaNet, and more. VRC provides text and voice chat in a 3D environment. YAG 2002 project is their home.

Another full 3D RTS Game Engine, Currently supporting OpenGL & DirectX. Also it is simple to add custom graphics drivers, eventually this will be ported to be OS independant but for development focus is Windows XP & DirectX